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cloud-kernel
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提交 d2fc0bac 编写于 作者: L Linus Torvalds
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (78 commits)
  x86: fix RTC lockdep warning: potential hardirq recursion
  x86: cpa, micro-optimization
  x86: cpa, clean up code flow
  x86: cpa, eliminate CPA_ enum
  x86: cpa, cleanups
  x86: implement gbpages support in change_page_attr()
  x86: support gbpages in pagetable dump
  x86: add gbpages support to lookup_address
  x86: add pgtable accessor functions for gbpages
  x86: add PUD_PAGE_SIZE
  x86: add feature macros for the gbpages cpuid bit
  x86: switch direct mapping setup over to set_pte
  x86: fix page-present check in cpa_flush_range
  x86: remove cpa warning
  x86: remove now unused clear_kernel_mapping
  x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_mapping()
  x86: cpa selftest, skip non present entries
  x86: CPA fix pagetable split
  x86: rename LARGE_PAGE_SIZE to PMD_PAGE_SIZE
  x86: cpa, fix lookup_address
  ...
上级 93890b71 795d45b2
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Showing with 821 addition and 814 deletion
Documentation/x86_64/00-INDEX 0 → 100644
浏览文件 @ d2fc0bac
00-INDEX
- This file
boot-options.txt
- AMD64-specific boot options.
cpu-hotplug-spec
- Firmware support for CPU hotplug under Linux/x86-64
fake-numa-for-cpusets
- Using numa=fake and CPUSets for Resource Management
kernel-stacks
- Context-specific per-processor interrupt stacks.
machinecheck
- Configurable sysfs parameters for the x86-64 machine check code.
mm.txt
- Memory layout of x86-64 (4 level page tables, 46 bits physical).
uefi.txt
- Booting Linux via Unified Extensible Firmware Interface.
arch/x86/Kconfig
浏览文件 @ d2fc0bac
......@@ -306,6 +306,7 @@ config X86_RDC321X
select M486
select X86_REBOOTFIXUPS
select GENERIC_GPIO
select LEDS_CLASS
select LEDS_GPIO
help
This option is needed for RDC R-321x system-on-chip, also known
......
arch/x86/Makefile
浏览文件 @ d2fc0bac
......@@ -92,7 +92,6 @@ KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
LDFLAGS := -m elf_$(UTS_MACHINE)
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
# Speed up the build
KBUILD_CFLAGS += -pipe
......
arch/x86/boot/Makefile
浏览文件 @ d2fc0bac
......@@ -26,7 +26,7 @@ SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
#RAMDISK := -DRAMDISK=512
targets := vmlinux.bin setup.bin setup.elf zImage bzImage
subdir- := compressed
subdir- := compressed
setup-y += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
......@@ -43,9 +43,17 @@ setup-y += video-vesa.o
setup-y += video-bios.o
targets += $(setup-y)
hostprogs-y := tools/build
hostprogs-y := mkcpustr tools/build
HOSTCFLAGS_build.o := $(LINUXINCLUDE)
HOST_EXTRACFLAGS += $(LINUXINCLUDE)
$(obj)/cpu.o: $(obj)/cpustr.h
quiet_cmd_cpustr = CPUSTR $@
cmd_cpustr = $(obj)/mkcpustr > $@
targets += cpustr.h
$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
$(call if_changed,cpustr)
# ---------------------------------------------------------------------------
......@@ -80,6 +88,7 @@ $(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
$(call if_changed,image)
@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
$(call if_changed,objcopy)
......@@ -90,7 +99,6 @@ $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
$(call if_changed,ld)
OBJCOPYFLAGS_setup.bin := -O binary
$(obj)/setup.bin: $(obj)/setup.elf FORCE
$(call if_changed,objcopy)
......@@ -98,7 +106,7 @@ $(obj)/compressed/vmlinux: FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
FDARGS =
FDARGS =
# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
FDINITRD =
......
arch/x86/boot/compressed/Makefile
浏览文件 @ d2fc0bac
......@@ -22,6 +22,7 @@ $(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $
$(call if_changed,ld)
@:
OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
......
arch/x86/boot/compressed/head_64.S
浏览文件 @ d2fc0bac
......@@ -80,8 +80,8 @@ startup_32:
#ifdef CONFIG_RELOCATABLE
movl %ebp, %ebx
addl $(LARGE_PAGE_SIZE -1), %ebx
andl $LARGE_PAGE_MASK, %ebx
addl $(PMD_PAGE_SIZE -1), %ebx
andl $PMD_PAGE_MASK, %ebx
#else
movl $CONFIG_PHYSICAL_START, %ebx
#endif
......@@ -220,8 +220,8 @@ ENTRY(startup_64)
/* Start with the delta to where the kernel will run at. */
#ifdef CONFIG_RELOCATABLE
leaq startup_32(%rip) /* - $startup_32 */, %rbp
addq $(LARGE_PAGE_SIZE - 1), %rbp
andq $LARGE_PAGE_MASK, %rbp
addq $(PMD_PAGE_SIZE - 1), %rbp
andq $PMD_PAGE_MASK, %rbp
movq %rbp, %rbx
#else
movq $CONFIG_PHYSICAL_START, %rbp
......
arch/x86/boot/cpu.c
浏览文件 @ d2fc0bac
/* -*- linux-c -*- ------------------------------------------------------- *
*
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright 2007 rPath, Inc. - All Rights Reserved
* Copyright 2007-2008 rPath, Inc. - All Rights Reserved
*
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2.
......@@ -9,7 +9,7 @@
* ----------------------------------------------------------------------- */
/*
* arch/i386/boot/cpu.c
* arch/x86/boot/cpu.c
*
* Check for obligatory CPU features and abort if the features are not
* present.
......@@ -19,6 +19,8 @@
#include "bitops.h"
#include <asm/cpufeature.h>
#include "cpustr.h"
static char *cpu_name(int level)
{
static char buf[6];
......@@ -35,6 +37,7 @@ int validate_cpu(void)
{
u32 *err_flags;
int cpu_level, req_level;
const unsigned char *msg_strs;
check_cpu(&cpu_level, &req_level, &err_flags);
......@@ -51,13 +54,26 @@ int validate_cpu(void)
puts("This kernel requires the following features "
"not present on the CPU:\n");
msg_strs = (const unsigned char *)x86_cap_strs;
for (i = 0; i < NCAPINTS; i++) {
u32 e = err_flags[i];
for (j = 0; j < 32; j++) {
if (e & 1)
printf("%d:%d ", i, j);
int n = (i << 5)+j;
if (*msg_strs < n) {
/* Skip to the next string */
do {
msg_strs++;
} while (*msg_strs);
msg_strs++;
}
if (e & 1) {
if (*msg_strs == n && msg_strs[1])
printf("%s ", msg_strs+1);
else
printf("%d:%d ", i, j);
}
e >>= 1;
}
}
......
arch/x86/boot/mkcpustr.c 0 → 100644
浏览文件 @ d2fc0bac
/* ----------------------------------------------------------------------- *
*
* Copyright 2008 rPath, Inc. - All Rights Reserved
*
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2 or (at your
* option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* This is a host program to preprocess the CPU strings into a
* compact format suitable for the setup code.
*/
#include <stdio.h>
#include "../kernel/cpu/feature_names.c"
#if NCAPFLAGS > 8
# error "Need to adjust the boot code handling of CPUID strings"
#endif
int main(void)
{
int i;
const char *str;
printf("static const char x86_cap_strs[] = \n");
for (i = 0; i < NCAPINTS*32; i++) {
str = x86_cap_flags[i];
if (i == NCAPINTS*32-1) {
/* The last entry must be unconditional; this
also consumes the compiler-added null character */
if (!str)
str = "";
printf("\t\"\\x%02x\"\"%s\"\n", i, str);
} else if (str) {
printf("#if REQUIRED_MASK%d & (1 << %d)\n"
"\t\"\\x%02x\"\"%s\\0\"\n"
"#endif\n",
i >> 5, i & 31, i, str);
}
}
printf("\t;\n");
return 0;
}
arch/x86/kernel/Makefile
浏览文件 @ d2fc0bac
......@@ -37,7 +37,8 @@ obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
obj-$(CONFIG_MICROCODE) += microcode.o
obj-$(CONFIG_PCI) += early-quirks.o
obj-$(CONFIG_APM) += apm_32.o
apm-y := apm_32.o
obj-$(CONFIG_APM) += apm.o
obj-$(CONFIG_X86_SMP) += smp_$(BITS).o smpboot_$(BITS).o tsc_sync.o
obj-$(CONFIG_X86_32_SMP) += smpcommon_32.o
obj-$(CONFIG_X86_64_SMP) += smp_64.o smpboot_64.o tsc_sync.o
......@@ -74,7 +75,8 @@ ifdef CONFIG_INPUT_PCSPKR
obj-y += pcspeaker.o
endif
obj-$(CONFIG_SCx200) += scx200_32.o
obj-$(CONFIG_SCx200) += scx200.o
scx200-y += scx200_32.o
###
# 64 bit specific files
......
arch/x86/kernel/cpu/Makefile
浏览文件 @ d2fc0bac
......@@ -3,6 +3,7 @@
#
obj-y := intel_cacheinfo.o addon_cpuid_features.o
obj-y += feature_names.o
obj-$(CONFIG_X86_32) += common.o proc.o bugs.o
obj-$(CONFIG_X86_32) += amd.o
......
arch/x86/kernel/cpu/common.c
浏览文件 @ d2fc0bac
......@@ -623,16 +623,6 @@ cpumask_t cpu_initialized __cpuinitdata = CPU_MASK_NONE;
* They will insert themselves into the cpu_devs structure.
* Then, when cpu_init() is called, we can just iterate over that array.
*/
extern int intel_cpu_init(void);
extern int cyrix_init_cpu(void);
extern int nsc_init_cpu(void);
extern int amd_init_cpu(void);
extern int centaur_init_cpu(void);
extern int transmeta_init_cpu(void);
extern int nexgen_init_cpu(void);
extern int umc_init_cpu(void);
void __init early_cpu_init(void)
{
intel_cpu_init();
......
arch/x86/kernel/cpu/cpu.h
浏览文件 @ d2fc0bac
......@@ -27,3 +27,12 @@ extern void display_cacheinfo(struct cpuinfo_x86 *c);
extern void early_init_intel(struct cpuinfo_x86 *c);
extern void early_init_amd(struct cpuinfo_x86 *c);
/* Specific CPU type init functions */
int intel_cpu_init(void);
int amd_init_cpu(void);
int cyrix_init_cpu(void);
int nsc_init_cpu(void);
int centaur_init_cpu(void);
int transmeta_init_cpu(void);
int nexgen_init_cpu(void);
int umc_init_cpu(void);
arch/x86/kernel/cpu/feature_names.c 0 → 100644
浏览文件 @ d2fc0bac
/*
* Strings for the various x86 capability flags.
*
* This file must not contain any executable code.
*/
#include "asm/cpufeature.h"
/*
* These flag bits must match the definitions in <asm/cpufeature.h>.
* NULL means this bit is undefined or reserved; either way it doesn't
* have meaning as far as Linux is concerned. Note that it's important
* to realize there is a difference between this table and CPUID -- if
* applications want to get the raw CPUID data, they should access
* /dev/cpu/<cpu_nr>/cpuid instead.
*/
const char * const x86_cap_flags[NCAPINTS*32] = {
/* Intel-defined */
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
/* AMD-defined */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
"3dnowext", "3dnow",
/* Transmeta-defined */
"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Other (Linux-defined) */
"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, "arch_perfmon",
"pebs", "bts", NULL, NULL,
"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
"lahf_lm", "cmp_legacy", "svm", "extapic",
"cr8_legacy", "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "sse5",
"skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Auxiliary (Linux-defined) */
"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
const char *const x86_power_flags[32] = {
"ts", /* temperature sensor */
"fid", /* frequency id control */
"vid", /* voltage id control */
"ttp", /* thermal trip */
"tm",
"stc",
"100mhzsteps",
"hwpstate",
"", /* tsc invariant mapped to constant_tsc */
/* nothing */
};
arch/x86/kernel/cpu/intel.c
浏览文件 @ d2fc0bac
......@@ -13,6 +13,7 @@
#include <asm/uaccess.h>
#include <asm/ptrace.h>
#include <asm/ds.h>
#include <asm/bugs.h>
#include "cpu.h"
......
arch/x86/kernel/cpu/mtrr/cyrix.c
浏览文件 @ d2fc0bac
......@@ -7,8 +7,6 @@
#include <asm/processor-flags.h>
#include "mtrr.h"
int arr3_protected;
static void
cyrix_get_arr(unsigned int reg, unsigned long *base,
unsigned long *size, mtrr_type * type)
......@@ -99,8 +97,6 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
case 4:
return replace_reg;
case 3:
if (arr3_protected)
break;
case 2:
case 1:
case 0:
......@@ -115,8 +111,6 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
} else {
for (i = 0; i < 7; i++) {
cyrix_get_arr(i, &lbase, &lsize, &ltype);
if ((i == 3) && arr3_protected)
continue;
if (lsize == 0)
return i;
}
......@@ -260,107 +254,6 @@ static void cyrix_set_all(void)
post_set();
}
#if 0
/*
* On Cyrix 6x86(MX) and M II the ARR3 is special: it has connection
* with the SMM (System Management Mode) mode. So we need the following:
* Check whether SMI_LOCK (CCR3 bit 0) is set
* if it is set, write a warning message: ARR3 cannot be changed!
* (it cannot be changed until the next processor reset)
* if it is reset, then we can change it, set all the needed bits:
* - disable access to SMM memory through ARR3 range (CCR1 bit 7 reset)
* - disable access to SMM memory (CCR1 bit 2 reset)
* - disable SMM mode (CCR1 bit 1 reset)
* - disable write protection of ARR3 (CCR6 bit 1 reset)
* - (maybe) disable ARR3
* Just to be sure, we enable ARR usage by the processor (CCR5 bit 5 set)
*/
static void __init
cyrix_arr_init(void)
{
struct set_mtrr_context ctxt;
unsigned char ccr[7];
int ccrc[7] = { 0, 0, 0, 0, 0, 0, 0 };
#ifdef CONFIG_SMP
int i;
#endif
/* flush cache and enable MAPEN */
set_mtrr_prepare_save(&ctxt);
set_mtrr_cache_disable(&ctxt);
/* Save all CCRs locally */
ccr[0] = getCx86(CX86_CCR0);
ccr[1] = getCx86(CX86_CCR1);
ccr[2] = getCx86(CX86_CCR2);
ccr[3] = ctxt.ccr3;
ccr[4] = getCx86(CX86_CCR4);
ccr[5] = getCx86(CX86_CCR5);
ccr[6] = getCx86(CX86_CCR6);
if (ccr[3] & 1) {
ccrc[3] = 1;
arr3_protected = 1;
} else {
/* Disable SMM mode (bit 1), access to SMM memory (bit 2) and
* access to SMM memory through ARR3 (bit 7).
*/
if (ccr[1] & 0x80) {
ccr[1] &= 0x7f;
ccrc[1] |= 0x80;
}
if (ccr[1] & 0x04) {
ccr[1] &= 0xfb;
ccrc[1] |= 0x04;
}
if (ccr[1] & 0x02) {
ccr[1] &= 0xfd;
ccrc[1] |= 0x02;
}
arr3_protected = 0;
if (ccr[6] & 0x02) {
ccr[6] &= 0xfd;
ccrc[6] = 1; /* Disable write protection of ARR3 */
setCx86(CX86_CCR6, ccr[6]);
}
/* Disable ARR3. This is safe now that we disabled SMM. */
/* cyrix_set_arr_up (3, 0, 0, 0, FALSE); */
}
/* If we changed CCR1 in memory, change it in the processor, too. */
if (ccrc[1])
setCx86(CX86_CCR1, ccr[1]);
/* Enable ARR usage by the processor */
if (!(ccr[5] & 0x20)) {
ccr[5] |= 0x20;
ccrc[5] = 1;
setCx86(CX86_CCR5, ccr[5]);
}
#ifdef CONFIG_SMP
for (i = 0; i < 7; i++)
ccr_state[i] = ccr[i];
for (i = 0; i < 8; i++)
cyrix_get_arr(i,
&arr_state[i].base, &arr_state[i].size,
&arr_state[i].type);
#endif
set_mtrr_done(&ctxt); /* flush cache and disable MAPEN */
if (ccrc[5])
printk(KERN_INFO "mtrr: ARR usage was not enabled, enabled manually\n");
if (ccrc[3])
printk(KERN_INFO "mtrr: ARR3 cannot be changed\n");
/*
if ( ccrc[1] & 0x80) printk ("mtrr: SMM memory access through ARR3 disabled\n");
if ( ccrc[1] & 0x04) printk ("mtrr: SMM memory access disabled\n");
if ( ccrc[1] & 0x02) printk ("mtrr: SMM mode disabled\n");
*/
if (ccrc[6])
printk(KERN_INFO "mtrr: ARR3 was write protected, unprotected\n");
}
#endif
static struct mtrr_ops cyrix_mtrr_ops = {
.vendor = X86_VENDOR_CYRIX,
// .init = cyrix_arr_init,
......
arch/x86/kernel/cpu/mtrr/main.c
浏览文件 @ d2fc0bac
......@@ -59,12 +59,6 @@ struct mtrr_ops * mtrr_if = NULL;
static void set_mtrr(unsigned int reg, unsigned long base,
unsigned long size, mtrr_type type);
#ifndef CONFIG_X86_64
extern int arr3_protected;
#else
#define arr3_protected 0
#endif
void set_mtrr_ops(struct mtrr_ops * ops)
{
if (ops->vendor && ops->vendor < X86_VENDOR_NUM)
......@@ -513,12 +507,6 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
printk(KERN_WARNING "mtrr: register: %d too big\n", reg);
goto out;
}
if (is_cpu(CYRIX) && !use_intel()) {
if ((reg == 3) && arr3_protected) {
printk(KERN_WARNING "mtrr: ARR3 cannot be changed\n");
goto out;
}
}
mtrr_if->get(reg, &lbase, &lsize, &ltype);
if (lsize < 1) {
printk(KERN_WARNING "mtrr: MTRR %d not used\n", reg);
......@@ -566,10 +554,6 @@ EXPORT_SYMBOL(mtrr_del);
* These should be called implicitly, but we can't yet until all the initcall
* stuff is done...
*/
extern void amd_init_mtrr(void);
extern void cyrix_init_mtrr(void);
extern void centaur_init_mtrr(void);
static void __init init_ifs(void)
{
#ifndef CONFIG_X86_64
......
arch/x86/kernel/cpu/mtrr/mtrr.h
浏览文件 @ d2fc0bac
......@@ -97,3 +97,7 @@ void mtrr_state_warn(void);
const char *mtrr_attrib_to_str(int x);
void mtrr_wrmsr(unsigned, unsigned, unsigned);
/* CPU specific mtrr init functions */
int amd_init_mtrr(void);
int cyrix_init_mtrr(void);
int centaur_init_mtrr(void);
arch/x86/kernel/cpu/proc.c
浏览文件 @ d2fc0bac
......@@ -10,80 +10,6 @@
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
/*
* These flag bits must match the definitions in <asm/cpufeature.h>.
* NULL means this bit is undefined or reserved; either way it doesn't
* have meaning as far as Linux is concerned. Note that it's important
* to realize there is a difference between this table and CPUID -- if
* applications want to get the raw CPUID data, they should access
* /dev/cpu/<cpu_nr>/cpuid instead.
*/
static const char * const x86_cap_flags[] = {
/* Intel-defined */
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
/* AMD-defined */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
"3dnowext", "3dnow",
/* Transmeta-defined */
"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Other (Linux-defined) */
"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, "arch_perfmon",
"pebs", "bts", NULL, "sync_rdtsc",
"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
"lahf_lm", "cmp_legacy", "svm", "extapic",
"cr8_legacy", "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "sse5",
"skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Auxiliary (Linux-defined) */
"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
static const char * const x86_power_flags[] = {
"ts", /* temperature sensor */
"fid", /* frequency id control */
"vid", /* voltage id control */
"ttp", /* thermal trip */
"tm",
"stc",
"100mhzsteps",
"hwpstate",
"", /* constant_tsc - moved to flags */
/* nothing */
};
struct cpuinfo_x86 *c = v;
int i, n = 0;
int fpu_exception;
......
arch/x86/kernel/cpuid.c
浏览文件 @ d2fc0bac
/* ----------------------------------------------------------------------- *
*
* Copyright 2000 H. Peter Anvin - All Rights Reserved
*
* Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -17,6 +17,10 @@
* and then read in chunks of 16 bytes. A larger size means multiple
* reads of consecutive levels.
*
* The lower 32 bits of the file position is used as the incoming %eax,
* and the upper 32 bits of the file position as the incoming %ecx,
* the latter intended for "counting" eax levels like eax=4.
*
* This driver uses /dev/cpu/%d/cpuid where %d is the minor number, and on
* an SMP box will direct the access to CPU %d.
*/
......@@ -43,35 +47,24 @@
static struct class *cpuid_class;
struct cpuid_command {
u32 reg;
u32 *data;
struct cpuid_regs {
u32 eax, ebx, ecx, edx;
};
static void cpuid_smp_cpuid(void *cmd_block)
{
struct cpuid_command *cmd = cmd_block;
cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
&cmd->data[3]);
}
static inline void do_cpuid(int cpu, u32 reg, u32 * data)
{
struct cpuid_command cmd;
cmd.reg = reg;
cmd.data = data;
struct cpuid_regs *cmd = (struct cpuid_regs *)cmd_block;
smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
cpuid_count(cmd->eax, cmd->ecx,
&cmd->eax, &cmd->ebx, &cmd->ecx, &cmd->edx);
}
static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
{
loff_t ret;
struct inode *inode = file->f_mapping->host;
lock_kernel();
mutex_lock(&inode->i_mutex);
switch (orig) {
case 0:
file->f_pos = offset;
......@@ -84,8 +77,7 @@ static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
default:
ret = -EINVAL;
}
unlock_kernel();
mutex_unlock(&inode->i_mutex);
return ret;
}
......@@ -93,19 +85,21 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
size_t count, loff_t * ppos)
{
char __user *tmp = buf;
u32 data[4];
u32 reg = *ppos;
struct cpuid_regs cmd;
int cpu = iminor(file->f_path.dentry->d_inode);
u64 pos = *ppos;
if (count % 16)
return -EINVAL; /* Invalid chunk size */
for (; count; count -= 16) {
do_cpuid(cpu, reg, data);
if (copy_to_user(tmp, &data, 16))
cmd.eax = pos;
cmd.ecx = pos >> 32;
smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
if (copy_to_user(tmp, &cmd, 16))
return -EFAULT;
tmp += 16;
*ppos = reg++;
*ppos = ++pos;
}
return tmp - buf;
......@@ -193,7 +187,7 @@ static int __init cpuid_init(void)
}
for_each_online_cpu(i) {
err = cpuid_device_create(i);
if (err != 0)
if (err != 0)
goto out_class;
}
register_hotcpu_notifier(&cpuid_class_cpu_notifier);
......@@ -208,7 +202,7 @@ static int __init cpuid_init(void)
}
class_destroy(cpuid_class);
out_chrdev:
unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
out:
return err;
}
......
arch/x86/kernel/efi.c
浏览文件 @ d2fc0bac
......@@ -379,11 +379,9 @@ void __init efi_init(void)
#endif
}
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
static void __init runtime_code_page_mkexec(void)
{
efi_memory_desc_t *md;
unsigned long end;
void *p;
if (!(__supported_pte_mask & _PAGE_NX))
......@@ -392,18 +390,13 @@ static void __init runtime_code_page_mkexec(void)
/* Make EFI runtime service code area executable */
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
md = p;
end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
if (md->type == EFI_RUNTIME_SERVICES_CODE &&
(end >> PAGE_SHIFT) <= max_pfn_mapped) {
set_memory_x(md->virt_addr, md->num_pages);
set_memory_uc(md->virt_addr, md->num_pages);
}
if (md->type != EFI_RUNTIME_SERVICES_CODE)
continue;
set_memory_x(md->virt_addr, md->num_pages << EFI_PAGE_SHIFT);
}
__flush_tlb_all();
}
#else
static inline void __init runtime_code_page_mkexec(void) { }
#endif
/*
* This function will switch the EFI runtime services to virtual mode.
......@@ -417,30 +410,40 @@ void __init efi_enter_virtual_mode(void)
{
efi_memory_desc_t *md;
efi_status_t status;
unsigned long end;
void *p;
unsigned long size;
u64 end, systab;
void *p, *va;
efi.systab = NULL;
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
md = p;
if (!(md->attribute & EFI_MEMORY_RUNTIME))
continue;
end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
if ((md->attribute & EFI_MEMORY_WB) &&
((end >> PAGE_SHIFT) <= max_pfn_mapped))
md->virt_addr = (unsigned long)__va(md->phys_addr);
size = md->num_pages << EFI_PAGE_SHIFT;
end = md->phys_addr + size;
if ((end >> PAGE_SHIFT) <= max_pfn_mapped)
va = __va(md->phys_addr);
else
md->virt_addr = (unsigned long)
efi_ioremap(md->phys_addr,
md->num_pages << EFI_PAGE_SHIFT);
if (!md->virt_addr)
va = efi_ioremap(md->phys_addr, size);
if (md->attribute & EFI_MEMORY_WB)
set_memory_uc(md->virt_addr, size);
md->virt_addr = (u64) (unsigned long) va;
if (!va) {
printk(KERN_ERR PFX "ioremap of 0x%llX failed!\n",
(unsigned long long)md->phys_addr);
if ((md->phys_addr <= (unsigned long)efi_phys.systab) &&
((unsigned long)efi_phys.systab < end))
efi.systab = (efi_system_table_t *)(unsigned long)
(md->virt_addr - md->phys_addr +
(unsigned long)efi_phys.systab);
continue;
}
systab = (u64) (unsigned long) efi_phys.systab;
if (md->phys_addr <= systab && systab < end) {
systab += md->virt_addr - md->phys_addr;
efi.systab = (efi_system_table_t *) (unsigned long) systab;
}
}
BUG_ON(!efi.systab);
......
arch/x86/kernel/efi_64.c
浏览文件 @ d2fc0bac
......@@ -54,10 +54,10 @@ static void __init early_mapping_set_exec(unsigned long start,
else
set_pte(kpte, __pte((pte_val(*kpte) | _PAGE_NX) & \
__supported_pte_mask));
if (level == 4)
start = (start + PMD_SIZE) & PMD_MASK;
else
if (level == PG_LEVEL_4K)
start = (start + PAGE_SIZE) & PAGE_MASK;
else
start = (start + PMD_SIZE) & PMD_MASK;
}
}
......@@ -109,23 +109,23 @@ void __init efi_reserve_bootmem(void)
memmap.nr_map * memmap.desc_size);
}
void __iomem * __init efi_ioremap(unsigned long offset,
unsigned long size)
void __iomem * __init efi_ioremap(unsigned long phys_addr, unsigned long size)
{
static unsigned pages_mapped;
unsigned long last_addr;
unsigned i, pages;
last_addr = offset + size - 1;
offset &= PAGE_MASK;
pages = (PAGE_ALIGN(last_addr) - offset) >> PAGE_SHIFT;
/* phys_addr and size must be page aligned */
if ((phys_addr & ~PAGE_MASK) || (size & ~PAGE_MASK))
return NULL;
pages = size >> PAGE_SHIFT;
if (pages_mapped + pages > MAX_EFI_IO_PAGES)
return NULL;
for (i = 0; i < pages; i++) {
__set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
offset, PAGE_KERNEL_EXEC_NOCACHE);
offset += PAGE_SIZE;
phys_addr, PAGE_KERNEL);
phys_addr += PAGE_SIZE;
pages_mapped++;
}
......
arch/x86/kernel/head_64.S
浏览文件 @ d2fc0bac
......@@ -63,7 +63,7 @@ startup_64:
/* Is the address not 2M aligned? */
movq %rbp, %rax
andl $~LARGE_PAGE_MASK, %eax
andl $~PMD_PAGE_MASK, %eax
testl %eax, %eax
jnz bad_address
......@@ -88,7 +88,7 @@ startup_64:
/* Add an Identity mapping if I am above 1G */
leaq _text(%rip), %rdi
andq $LARGE_PAGE_MASK, %rdi
andq $PMD_PAGE_MASK, %rdi
movq %rdi, %rax
shrq $PUD_SHIFT, %rax
......
arch/x86/kernel/ldt.c
浏览文件 @ d2fc0bac
......@@ -35,7 +35,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
if (mincount <= pc->size)
return 0;
oldsize = pc->size;
mincount = (mincount + 511) & (~511);
mincount = (mincount + (PAGE_SIZE / LDT_ENTRY_SIZE - 1)) &
(~(PAGE_SIZE / LDT_ENTRY_SIZE - 1));
if (mincount * LDT_ENTRY_SIZE > PAGE_SIZE)
newldt = vmalloc(mincount * LDT_ENTRY_SIZE);
else
......
arch/x86/kernel/msr.c
浏览文件 @ d2fc0bac
/* ----------------------------------------------------------------------- *
*
* Copyright 2000 H. Peter Anvin - All Rights Reserved
*
* Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -45,9 +45,10 @@ static struct class *msr_class;
static loff_t msr_seek(struct file *file, loff_t offset, int orig)
{
loff_t ret = -EINVAL;
loff_t ret;
struct inode *inode = file->f_mapping->host;
lock_kernel();
mutex_lock(&inode->i_mutex);
switch (orig) {
case 0:
file->f_pos = offset;
......@@ -56,8 +57,11 @@ static loff_t msr_seek(struct file *file, loff_t offset, int orig)
case 1:
file->f_pos += offset;
ret = file->f_pos;
break;
default:
ret = -EINVAL;
}
unlock_kernel();
mutex_unlock(&inode->i_mutex);
return ret;
}
......
arch/x86/kernel/pci-gart_64.c
浏览文件 @ d2fc0bac
......@@ -501,7 +501,7 @@ static __init unsigned long check_iommu_size(unsigned long aper, u64 aper_size)
}
a = aper + iommu_size;
iommu_size -= round_up(a, LARGE_PAGE_SIZE) - a;
iommu_size -= round_up(a, PMD_PAGE_SIZE) - a;
if (iommu_size < 64*1024*1024) {
printk(KERN_WARNING
......@@ -731,7 +731,8 @@ void __init gart_iommu_init(void)
* the backing memory. The GART address is only used by PCI
* devices.
*/
clear_kernel_mapping((unsigned long)__va(iommu_bus_base), iommu_size);
set_memory_np((unsigned long)__va(iommu_bus_base),
iommu_size >> PAGE_SHIFT);
/*
* Try to workaround a bug (thanks to BenH)
......
arch/x86/kernel/process_32.c
浏览文件 @ d2fc0bac
......@@ -251,7 +251,7 @@ void cpu_idle_wait(void)
* because it has nothing to do.
* Give all the remaining CPUS a kick.
*/
smp_call_function_mask(map, do_nothing, 0, 0);
smp_call_function_mask(map, do_nothing, NULL, 0);
} while (!cpus_empty(map));
set_cpus_allowed(current, tmp);
......
arch/x86/kernel/setup_64.c
浏览文件 @ d2fc0bac
......@@ -1068,82 +1068,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
struct cpuinfo_x86 *c = v;
int cpu = 0, i;
/*
* These flag bits must match the definitions in <asm/cpufeature.h>.
* NULL means this bit is undefined or reserved; either way it doesn't
* have meaning as far as Linux is concerned. Note that it's important
* to realize there is a difference between this table and CPUID -- if
* applications want to get the raw CPUID data, they should access
* /dev/cpu/<cpu_nr>/cpuid instead.
*/
static const char *const x86_cap_flags[] = {
/* Intel-defined */
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
/* AMD-defined */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL,
NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
"3dnowext", "3dnow",
/* Transmeta-defined */
"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Other (Linux-defined) */
"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, "arch_perfmon",
"pebs", "bts", NULL, "sync_rdtsc",
"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
"lahf_lm", "cmp_legacy", "svm", "extapic",
"cr8_legacy", "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "sse5",
"skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Auxiliary (Linux-defined) */
"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
static const char *const x86_power_flags[] = {
"ts", /* temperature sensor */
"fid", /* frequency id control */
"vid", /* voltage id control */
"ttp", /* thermal trip */
"tm",
"stc",
"100mhzsteps",
"hwpstate",
"", /* tsc invariant mapped to constant_tsc */
/* nothing */
};
#ifdef CONFIG_SMP
cpu = c->cpu_index;
#endif
......
arch/x86/kernel/test_nx.c
浏览文件 @ d2fc0bac
......@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/sort.h>
#include <asm/uaccess.h>
#include <asm/asm.h>
extern int rodata_test_data;
......@@ -89,16 +90,7 @@ static noinline int test_address(void *address)
"2: mov %[zero], %[rslt]\n"
" ret\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 8\n"
#ifdef CONFIG_X86_32
" .long 0b\n"
" .long 2b\n"
#else
" .quad 0b\n"
" .quad 2b\n"
#endif
".previous\n"
_ASM_EXTABLE(0b,2b)
: [rslt] "=r" (result)
: [fake_code] "r" (address), [zero] "r" (0UL), "0" (result)
);
......
arch/x86/kernel/trampoline_32.S
浏览文件 @ d2fc0bac
......@@ -11,12 +11,7 @@
* trampoline page to make our stack and everything else
* is a mystery.
*
* In fact we don't actually need a stack so we don't
* set one up.
*
* We jump into the boot/compressed/head.S code. So you'd
* better be running a compressed kernel image or you
* won't get very far.
* We jump into arch/x86/kernel/head_32.S.
*
* On entry to trampoline_data, the processor is in real mode
* with 16-bit addressing and 16-bit data. CS has some value
......
arch/x86/kernel/trampoline_64.S
浏览文件 @ d2fc0bac
......@@ -10,9 +10,6 @@
* trampoline page to make our stack and everything else
* is a mystery.
*
* In fact we don't actually need a stack so we don't
* set one up.
*
* On entry to trampoline_data, the processor is in real mode
* with 16-bit addressing and 16-bit data. CS has some value
* and IP is zero. Thus, data addresses need to be absolute
......
arch/x86/kernel/vmi_32.c
浏览文件 @ d2fc0bac
......@@ -220,21 +220,21 @@ static void vmi_set_tr(void)
static void vmi_write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
{
u32 *idt_entry = (u32 *)g;
vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[2]);
vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[1]);
}
static void vmi_write_gdt_entry(struct desc_struct *dt, int entry,
const void *desc, int type)
{
u32 *gdt_entry = (u32 *)desc;
vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[2]);
vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[1]);
}
static void vmi_write_ldt_entry(struct desc_struct *dt, int entry,
const void *desc)
{
u32 *ldt_entry = (u32 *)desc;
vmi_ops.write_idt_entry(dt, entry, ldt_entry[0], ldt_entry[2]);
vmi_ops.write_idt_entry(dt, entry, ldt_entry[0], ldt_entry[1]);
}
static void vmi_load_sp0(struct tss_struct *tss,
......
arch/x86/lib/mmx_32.c
浏览文件 @ d2fc0bac
......@@ -4,6 +4,7 @@
#include <linux/hardirq.h>
#include <linux/module.h>
#include <asm/asm.h>
#include <asm/i387.h>
......@@ -50,10 +51,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
"3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from) );
......@@ -81,10 +79,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
"3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from), "r" (to) : "memory");
from+=64;
to+=64;
......@@ -181,10 +176,7 @@ static void fast_copy_page(void *to, void *from)
"3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from) );
for(i=0; i<(4096-320)/64; i++)
......@@ -211,10 +203,7 @@ static void fast_copy_page(void *to, void *from)
"3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from), "r" (to) : "memory");
from+=64;
to+=64;
......@@ -311,10 +300,7 @@ static void fast_copy_page(void *to, void *from)
"3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from) );
for(i=0; i<4096/64; i++)
......@@ -341,10 +327,7 @@ static void fast_copy_page(void *to, void *from)
"3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b, 3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: : "r" (from), "r" (to) : "memory");
from+=64;
to+=64;
......
arch/x86/lib/usercopy_32.c
浏览文件 @ d2fc0bac
......@@ -48,10 +48,7 @@ do { \
"3: movl %5,%0\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 0b,3b\n" \
".previous" \
_ASM_EXTABLE(0b,3b) \
: "=d"(res), "=c"(count), "=&a" (__d0), "=&S" (__d1), \
"=&D" (__d2) \
: "i"(-EFAULT), "0"(count), "1"(count), "3"(src), "4"(dst) \
......@@ -132,11 +129,8 @@ do { \
"3: lea 0(%2,%0,4),%0\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 0b,3b\n" \
" .long 1b,2b\n" \
".previous" \
_ASM_EXTABLE(0b,3b) \
_ASM_EXTABLE(1b,2b) \
: "=&c"(size), "=&D" (__d0) \
: "r"(size & 3), "0"(size / 4), "1"(addr), "a"(0)); \
} while (0)
......
arch/x86/lib/usercopy_64.c
浏览文件 @ d2fc0bac
......@@ -31,10 +31,7 @@ do { \
"3: movq %5,%0\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 8\n" \
" .quad 0b,3b\n" \
".previous" \
_ASM_EXTABLE(0b,3b) \
: "=r"(res), "=c"(count), "=&a" (__d0), "=&S" (__d1), \
"=&D" (__d2) \
: "i"(-EFAULT), "0"(count), "1"(count), "3"(src), "4"(dst) \
......@@ -87,11 +84,8 @@ unsigned long __clear_user(void __user *addr, unsigned long size)
"3: lea 0(%[size1],%[size8],8),%[size8]\n"
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 0b,3b\n"
" .quad 1b,2b\n"
".previous"
_ASM_EXTABLE(0b,3b)
_ASM_EXTABLE(1b,2b)
: [size8] "=c"(size), [dst] "=&D" (__d0)
: [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(addr),
[zero] "r" (0UL), [eight] "r" (8UL));
......
arch/x86/mm/fault.c
浏览文件 @ d2fc0bac
......@@ -240,7 +240,8 @@ void dump_pagetable(unsigned long address)
pud = pud_offset(pgd, address);
if (bad_address(pud)) goto bad;
printk("PUD %lx ", pud_val(*pud));
if (!pud_present(*pud)) goto ret;
if (!pud_present(*pud) || pud_large(*pud))
goto ret;
pmd = pmd_offset(pud, address);
if (bad_address(pmd)) goto bad;
......@@ -508,6 +509,10 @@ static int vmalloc_fault(unsigned long address)
pmd_t *pmd, *pmd_ref;
pte_t *pte, *pte_ref;
/* Make sure we are in vmalloc area */
if (!(address >= VMALLOC_START && address < VMALLOC_END))
return -1;
/* Copy kernel mappings over when needed. This can also
happen within a race in page table update. In the later
case just flush. */
......@@ -603,6 +608,9 @@ void __kprobes do_page_fault(struct pt_regs *regs, unsigned long error_code)
*/
#ifdef CONFIG_X86_32
if (unlikely(address >= TASK_SIZE)) {
#else
if (unlikely(address >= TASK_SIZE64)) {
#endif
if (!(error_code & (PF_RSVD|PF_USER|PF_PROT)) &&
vmalloc_fault(address) >= 0)
return;
......@@ -618,6 +626,8 @@ void __kprobes do_page_fault(struct pt_regs *regs, unsigned long error_code)
goto bad_area_nosemaphore;
}
#ifdef CONFIG_X86_32
/* It's safe to allow irq's after cr2 has been saved and the vmalloc
fault has been handled. */
if (regs->flags & (X86_EFLAGS_IF|VM_MASK))
......@@ -630,28 +640,6 @@ void __kprobes do_page_fault(struct pt_regs *regs, unsigned long error_code)
if (in_atomic() || !mm)
goto bad_area_nosemaphore;
#else /* CONFIG_X86_64 */
if (unlikely(address >= TASK_SIZE64)) {
/*
* Don't check for the module range here: its PML4
* is always initialized because it's shared with the main
* kernel text. Only vmalloc may need PML4 syncups.
*/
if (!(error_code & (PF_RSVD|PF_USER|PF_PROT)) &&
((address >= VMALLOC_START && address < VMALLOC_END))) {
if (vmalloc_fault(address) >= 0)
return;
}
/* Can handle a stale RO->RW TLB */
if (spurious_fault(address, error_code))
return;
/*
* Don't take the mm semaphore here. If we fixup a prefetch
* fault we could otherwise deadlock.
*/
goto bad_area_nosemaphore;
}
if (likely(regs->flags & X86_EFLAGS_IF))
local_irq_enable();
......
arch/x86/mm/init_32.c
浏览文件 @ d2fc0bac
......@@ -31,6 +31,7 @@
#include <linux/initrd.h>
#include <linux/cpumask.h>
#include <asm/asm.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/uaccess.h>
......@@ -718,10 +719,7 @@ static noinline int do_test_wp_bit(void)
"1: movb %1, %0 \n"
" xorl %2, %2 \n"
"2: \n"
".section __ex_table, \"a\"\n"
" .align 4 \n"
" .long 1b, 2b \n"
".previous \n"
_ASM_EXTABLE(1b,2b)
:"=m" (*(char *)fix_to_virt(FIX_WP_TEST)),
"=q" (tmp_reg),
"=r" (flag)
......
arch/x86/mm/init_64.c
浏览文件 @ d2fc0bac
......@@ -273,7 +273,6 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end)
int i = pmd_index(address);
for (; i < PTRS_PER_PMD; i++, address += PMD_SIZE) {
unsigned long entry;
pmd_t *pmd = pmd_page + pmd_index(address);
if (address >= end) {
......@@ -287,9 +286,8 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end)
if (pmd_val(*pmd))
continue;
entry = __PAGE_KERNEL_LARGE|_PAGE_GLOBAL|address;
entry &= __supported_pte_mask;
set_pmd(pmd, __pmd(entry));
set_pte((pte_t *)pmd,
pfn_pte(address >> PAGE_SHIFT, PAGE_KERNEL_LARGE));
}
}
......@@ -434,49 +432,6 @@ void __init paging_init(void)
}
#endif
/*
* Unmap a kernel mapping if it exists. This is useful to avoid
* prefetches from the CPU leading to inconsistent cache lines.
* address and size must be aligned to 2MB boundaries.
* Does nothing when the mapping doesn't exist.
*/
void __init clear_kernel_mapping(unsigned long address, unsigned long size)
{
unsigned long end = address + size;
BUG_ON(address & ~LARGE_PAGE_MASK);
BUG_ON(size & ~LARGE_PAGE_MASK);
for (; address < end; address += LARGE_PAGE_SIZE) {
pgd_t *pgd = pgd_offset_k(address);
pud_t *pud;
pmd_t *pmd;
if (pgd_none(*pgd))
continue;
pud = pud_offset(pgd, address);
if (pud_none(*pud))
continue;
pmd = pmd_offset(pud, address);
if (!pmd || pmd_none(*pmd))
continue;
if (!(pmd_val(*pmd) & _PAGE_PSE)) {
/*
* Could handle this, but it should not happen
* currently:
*/
printk(KERN_ERR "clear_kernel_mapping: "
"mapping has been split. will leak memory\n");
pmd_ERROR(*pmd);
}
set_pmd(pmd, __pmd(0));
}
__flush_tlb_all();
}
/*
* Memory hotplug specific functions
*/
......
arch/x86/mm/ioremap.c
浏览文件 @ d2fc0bac
......@@ -70,25 +70,12 @@ int page_is_ram(unsigned long pagenr)
* Fix up the linear direct mapping of the kernel to avoid cache attribute
* conflicts.
*/
static int ioremap_change_attr(unsigned long paddr, unsigned long size,
static int ioremap_change_attr(unsigned long vaddr, unsigned long size,
enum ioremap_mode mode)
{
unsigned long vaddr = (unsigned long)__va(paddr);
unsigned long nrpages = size >> PAGE_SHIFT;
unsigned int level;
int err;
/* No change for pages after the last mapping */
if ((paddr + size - 1) >= (max_pfn_mapped << PAGE_SHIFT))
return 0;
/*
* If there is no identity map for this address,
* change_page_attr_addr is unnecessary
*/
if (!lookup_address(vaddr, &level))
return 0;
switch (mode) {
case IOR_MODE_UNCACHED:
default:
......@@ -114,9 +101,8 @@ static int ioremap_change_attr(unsigned long paddr, unsigned long size,
static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
enum ioremap_mode mode)
{
void __iomem *addr;
unsigned long pfn, offset, last_addr, vaddr;
struct vm_struct *area;
unsigned long offset, last_addr;
pgprot_t prot;
/* Don't allow wraparound or zero size */
......@@ -133,9 +119,10 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
/*
* Don't allow anybody to remap normal RAM that we're using..
*/
for (offset = phys_addr >> PAGE_SHIFT; offset < max_pfn_mapped &&
(offset << PAGE_SHIFT) < last_addr; offset++) {
if (page_is_ram(offset))
for (pfn = phys_addr >> PAGE_SHIFT; pfn < max_pfn_mapped &&
(pfn << PAGE_SHIFT) < last_addr; pfn++) {
if (page_is_ram(pfn) && pfn_valid(pfn) &&
!PageReserved(pfn_to_page(pfn)))
return NULL;
}
......@@ -163,19 +150,18 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
if (!area)
return NULL;
area->phys_addr = phys_addr;
addr = (void __iomem *) area->addr;
if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
phys_addr, prot)) {
remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
vaddr = (unsigned long) area->addr;
if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
remove_vm_area((void *)(vaddr & PAGE_MASK));
return NULL;
}
if (ioremap_change_attr(phys_addr, size, mode) < 0) {
vunmap(addr);
if (ioremap_change_attr(vaddr, size, mode) < 0) {
vunmap(area->addr);
return NULL;
}
return (void __iomem *) (offset + (char __iomem *)addr);
return (void __iomem *) (vaddr + offset);
}
/**
......@@ -254,9 +240,6 @@ void iounmap(volatile void __iomem *addr)
return;
}
/* Reset the direct mapping. Can block */
ioremap_change_attr(p->phys_addr, p->size, IOR_MODE_CACHED);
/* Finally remove it */
o = remove_vm_area((void *)addr);
BUG_ON(p != o || o == NULL);
......
arch/x86/mm/numa_64.c
浏览文件 @ d2fc0bac
......@@ -202,6 +202,8 @@ void __init setup_node_bootmem(int nodeid, unsigned long start,
if (node_data[nodeid] == NULL)
return;
nodedata_phys = __pa(node_data[nodeid]);
printk(KERN_INFO " NODE_DATA [%016lx - %016lx]\n", nodedata_phys,
nodedata_phys + pgdat_size - 1);
memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t));
NODE_DATA(nodeid)->bdata = &plat_node_bdata[nodeid];
......@@ -225,12 +227,15 @@ void __init setup_node_bootmem(int nodeid, unsigned long start,
return;
}
bootmap_start = __pa(bootmap);
Dprintk("bootmap start %lu pages %lu\n", bootmap_start, bootmap_pages);
bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
bootmap_start >> PAGE_SHIFT,
start_pfn, end_pfn);
printk(KERN_INFO " bootmap [%016lx - %016lx] pages %lx\n",
bootmap_start, bootmap_start + bootmap_size - 1,
bootmap_pages);
free_bootmem_with_active_regions(nodeid, end);
reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, pgdat_size);
......
arch/x86/mm/pageattr-test.c
浏览文件 @ d2fc0bac
......@@ -137,7 +137,8 @@ static __init int exercise_pageattr(void)
for (k = 0; k < len[i]; k++) {
pte = lookup_address(addr[i] + k*PAGE_SIZE, &level);
if (!pte || pgprot_val(pte_pgprot(*pte)) == 0) {
if (!pte || pgprot_val(pte_pgprot(*pte)) == 0 ||
!(pte_val(*pte) & _PAGE_PRESENT)) {
addr[i] = 0;
break;
}
......
arch/x86/mm/pageattr.c
浏览文件 @ d2fc0bac
......@@ -16,6 +16,17 @@
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
/*
* The current flushing context - we pass it instead of 5 arguments:
*/
struct cpa_data {
unsigned long vaddr;
pgprot_t mask_set;
pgprot_t mask_clr;
int numpages;
int flushtlb;
};
static inline int
within(unsigned long addr, unsigned long start, unsigned long end)
{
......@@ -52,21 +63,23 @@ void clflush_cache_range(void *vaddr, unsigned int size)
static void __cpa_flush_all(void *arg)
{
unsigned long cache = (unsigned long)arg;
/*
* Flush all to work around Errata in early athlons regarding
* large page flushing.
*/
__flush_tlb_all();
if (boot_cpu_data.x86_model >= 4)
if (cache && boot_cpu_data.x86_model >= 4)
wbinvd();
}
static void cpa_flush_all(void)
static void cpa_flush_all(unsigned long cache)
{
BUG_ON(irqs_disabled());
on_each_cpu(__cpa_flush_all, NULL, 1, 1);
on_each_cpu(__cpa_flush_all, (void *) cache, 1, 1);
}
static void __cpa_flush_range(void *arg)
......@@ -79,7 +92,7 @@ static void __cpa_flush_range(void *arg)
__flush_tlb_all();
}
static void cpa_flush_range(unsigned long start, int numpages)
static void cpa_flush_range(unsigned long start, int numpages, int cache)
{
unsigned int i, level;
unsigned long addr;
......@@ -89,6 +102,9 @@ static void cpa_flush_range(unsigned long start, int numpages)
on_each_cpu(__cpa_flush_range, NULL, 1, 1);
if (!cache)
return;
/*
* We only need to flush on one CPU,
* clflush is a MESI-coherent instruction that
......@@ -101,11 +117,27 @@ static void cpa_flush_range(unsigned long start, int numpages)
/*
* Only flush present addresses:
*/
if (pte && pte_present(*pte))
if (pte && (pte_val(*pte) & _PAGE_PRESENT))
clflush_cache_range((void *) addr, PAGE_SIZE);
}
}
#define HIGH_MAP_START __START_KERNEL_map
#define HIGH_MAP_END (__START_KERNEL_map + KERNEL_TEXT_SIZE)
/*
* Converts a virtual address to a X86-64 highmap address
*/
static unsigned long virt_to_highmap(void *address)
{
#ifdef CONFIG_X86_64
return __pa((unsigned long)address) + HIGH_MAP_START - phys_base;
#else
return (unsigned long)address;
#endif
}
/*
* Certain areas of memory on x86 require very specific protection flags,
* for example the BIOS area or kernel text. Callers don't always get this
......@@ -129,12 +161,24 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address)
*/
if (within(address, (unsigned long)_text, (unsigned long)_etext))
pgprot_val(forbidden) |= _PAGE_NX;
/*
* Do the same for the x86-64 high kernel mapping
*/
if (within(address, virt_to_highmap(_text), virt_to_highmap(_etext)))
pgprot_val(forbidden) |= _PAGE_NX;
#ifdef CONFIG_DEBUG_RODATA
/* The .rodata section needs to be read-only */
if (within(address, (unsigned long)__start_rodata,
(unsigned long)__end_rodata))
pgprot_val(forbidden) |= _PAGE_RW;
/*
* Do the same for the x86-64 high kernel mapping
*/
if (within(address, virt_to_highmap(__start_rodata),
virt_to_highmap(__end_rodata)))
pgprot_val(forbidden) |= _PAGE_RW;
#endif
prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden));
......@@ -142,6 +186,14 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address)
return prot;
}
/*
* Lookup the page table entry for a virtual address. Return a pointer
* to the entry and the level of the mapping.
*
* Note: We return pud and pmd either when the entry is marked large
* or when the present bit is not set. Otherwise we would return a
* pointer to a nonexisting mapping.
*/
pte_t *lookup_address(unsigned long address, int *level)
{
pgd_t *pgd = pgd_offset_k(address);
......@@ -152,21 +204,31 @@ pte_t *lookup_address(unsigned long address, int *level)
if (pgd_none(*pgd))
return NULL;
pud = pud_offset(pgd, address);
if (pud_none(*pud))
return NULL;
*level = PG_LEVEL_1G;
if (pud_large(*pud) || !pud_present(*pud))
return (pte_t *)pud;
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return NULL;
*level = PG_LEVEL_2M;
if (pmd_large(*pmd))
if (pmd_large(*pmd) || !pmd_present(*pmd))
return (pte_t *)pmd;
*level = PG_LEVEL_4K;
return pte_offset_kernel(pmd, address);
}
/*
* Set the new pmd in all the pgds we know about:
*/
static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
{
/* change init_mm */
......@@ -175,6 +237,7 @@ static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
if (!SHARED_KERNEL_PMD) {
struct page *page;
address = __pa(address);
list_for_each_entry(page, &pgd_list, lru) {
pgd_t *pgd;
pud_t *pud;
......@@ -189,18 +252,114 @@ static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
#endif
}
static int
try_preserve_large_page(pte_t *kpte, unsigned long address,
struct cpa_data *cpa)
{
unsigned long nextpage_addr, numpages, pmask, psize, flags;
pte_t new_pte, old_pte, *tmp;
pgprot_t old_prot, new_prot;
int level, do_split = 1;
/*
* An Athlon 64 X2 showed hard hangs if we tried to preserve
* largepages and changed the PSE entry from RW to RO.
*
* As AMD CPUs have a long series of erratas in this area,
* (and none of the known ones seem to explain this hang),
* disable this code until the hang can be debugged:
*/
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
return 1;
spin_lock_irqsave(&pgd_lock, flags);
/*
* Check for races, another CPU might have split this page
* up already:
*/
tmp = lookup_address(address, &level);
if (tmp != kpte)
goto out_unlock;
switch (level) {
case PG_LEVEL_2M:
psize = PMD_PAGE_SIZE;
pmask = PMD_PAGE_MASK;
break;
#ifdef CONFIG_X86_64
case PG_LEVEL_1G:
psize = PMD_PAGE_SIZE;
pmask = PMD_PAGE_MASK;
break;
#endif
default:
do_split = -EINVAL;
goto out_unlock;
}
/*
* Calculate the number of pages, which fit into this large
* page starting at address:
*/
nextpage_addr = (address + psize) & pmask;
numpages = (nextpage_addr - address) >> PAGE_SHIFT;
if (numpages < cpa->numpages)
cpa->numpages = numpages;
/*
* We are safe now. Check whether the new pgprot is the same:
*/
old_pte = *kpte;
old_prot = new_prot = pte_pgprot(old_pte);
pgprot_val(new_prot) &= ~pgprot_val(cpa->mask_clr);
pgprot_val(new_prot) |= pgprot_val(cpa->mask_set);
new_prot = static_protections(new_prot, address);
/*
* If there are no changes, return. maxpages has been updated
* above:
*/
if (pgprot_val(new_prot) == pgprot_val(old_prot)) {
do_split = 0;
goto out_unlock;
}
/*
* We need to change the attributes. Check, whether we can
* change the large page in one go. We request a split, when
* the address is not aligned and the number of pages is
* smaller than the number of pages in the large page. Note
* that we limited the number of possible pages already to
* the number of pages in the large page.
*/
if (address == (nextpage_addr - psize) && cpa->numpages == numpages) {
/*
* The address is aligned and the number of pages
* covers the full page.
*/
new_pte = pfn_pte(pte_pfn(old_pte), canon_pgprot(new_prot));
__set_pmd_pte(kpte, address, new_pte);
cpa->flushtlb = 1;
do_split = 0;
}
out_unlock:
spin_unlock_irqrestore(&pgd_lock, flags);
return do_split;
}
static int split_large_page(pte_t *kpte, unsigned long address)
{
pgprot_t ref_prot = pte_pgprot(pte_clrhuge(*kpte));
unsigned long flags, pfn, pfninc = 1;
gfp_t gfp_flags = GFP_KERNEL;
unsigned long flags;
unsigned long addr;
unsigned int i, level;
pte_t *pbase, *tmp;
pgprot_t ref_prot;
struct page *base;
unsigned int i, level;
#ifdef CONFIG_DEBUG_PAGEALLOC
gfp_flags = __GFP_HIGH | __GFP_NOFAIL | __GFP_NOWARN;
gfp_flags = GFP_ATOMIC | __GFP_NOWARN;
#endif
base = alloc_pages(gfp_flags, 0);
......@@ -213,30 +372,41 @@ static int split_large_page(pte_t *kpte, unsigned long address)
* up for us already:
*/
tmp = lookup_address(address, &level);
if (tmp != kpte) {
WARN_ON_ONCE(1);
if (tmp != kpte)
goto out_unlock;
}
address = __pa(address);
addr = address & LARGE_PAGE_MASK;
pbase = (pte_t *)page_address(base);
#ifdef CONFIG_X86_32
paravirt_alloc_pt(&init_mm, page_to_pfn(base));
#endif
ref_prot = pte_pgprot(pte_clrhuge(*kpte));
#ifdef CONFIG_X86_64
if (level == PG_LEVEL_1G) {
pfninc = PMD_PAGE_SIZE >> PAGE_SHIFT;
pgprot_val(ref_prot) |= _PAGE_PSE;
}
#endif
pgprot_val(ref_prot) &= ~_PAGE_NX;
for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE)
set_pte(&pbase[i], pfn_pte(addr >> PAGE_SHIFT, ref_prot));
/*
* Get the target pfn from the original entry:
*/
pfn = pte_pfn(*kpte);
for (i = 0; i < PTRS_PER_PTE; i++, pfn += pfninc)
set_pte(&pbase[i], pfn_pte(pfn, ref_prot));
/*
* Install the new, split up pagetable. Important detail here:
* Install the new, split up pagetable. Important details here:
*
* On Intel the NX bit of all levels must be cleared to make a
* page executable. See section 4.13.2 of Intel 64 and IA-32
* Architectures Software Developer's Manual).
*
* Mark the entry present. The current mapping might be
* set to not present, which we preserved above.
*/
ref_prot = pte_pgprot(pte_mkexec(pte_clrhuge(*kpte)));
pgprot_val(ref_prot) |= _PAGE_PRESENT;
__set_pmd_pte(kpte, address, mk_pte(base, ref_prot));
base = NULL;
......@@ -249,18 +419,12 @@ static int split_large_page(pte_t *kpte, unsigned long address)
return 0;
}
static int
__change_page_attr(unsigned long address, unsigned long pfn,
pgprot_t mask_set, pgprot_t mask_clr)
static int __change_page_attr(unsigned long address, struct cpa_data *cpa)
{
int level, do_split, err;
struct page *kpte_page;
int level, err = 0;
pte_t *kpte;
#ifdef CONFIG_X86_32
BUG_ON(pfn > max_low_pfn);
#endif
repeat:
kpte = lookup_address(address, &level);
if (!kpte)
......@@ -271,23 +435,62 @@ __change_page_attr(unsigned long address, unsigned long pfn,
BUG_ON(PageCompound(kpte_page));
if (level == PG_LEVEL_4K) {
pgprot_t new_prot = pte_pgprot(*kpte);
pte_t new_pte, old_pte = *kpte;
pgprot_t new_prot = pte_pgprot(old_pte);
if(!pte_val(old_pte)) {
printk(KERN_WARNING "CPA: called for zero pte. "
"vaddr = %lx cpa->vaddr = %lx\n", address,
cpa->vaddr);
WARN_ON(1);
return -EINVAL;
}
pgprot_val(new_prot) &= ~pgprot_val(mask_clr);
pgprot_val(new_prot) |= pgprot_val(mask_set);
pgprot_val(new_prot) &= ~pgprot_val(cpa->mask_clr);
pgprot_val(new_prot) |= pgprot_val(cpa->mask_set);
new_prot = static_protections(new_prot, address);
new_pte = pfn_pte(pfn, canon_pgprot(new_prot));
BUG_ON(pte_pfn(new_pte) != pte_pfn(old_pte));
/*
* We need to keep the pfn from the existing PTE,
* after all we're only going to change it's attributes
* not the memory it points to
*/
new_pte = pfn_pte(pte_pfn(old_pte), canon_pgprot(new_prot));
/*
* Do we really change anything ?
*/
if (pte_val(old_pte) != pte_val(new_pte)) {
set_pte_atomic(kpte, new_pte);
cpa->flushtlb = 1;
}
cpa->numpages = 1;
return 0;
}
/*
* Check, whether we can keep the large page intact
* and just change the pte:
*/
do_split = try_preserve_large_page(kpte, address, cpa);
/*
* When the range fits into the existing large page,
* return. cp->numpages and cpa->tlbflush have been updated in
* try_large_page:
*/
if (do_split <= 0)
return do_split;
set_pte_atomic(kpte, new_pte);
} else {
err = split_large_page(kpte, address);
if (!err)
goto repeat;
/*
* We have to split the large page:
*/
err = split_large_page(kpte, address);
if (!err) {
cpa->flushtlb = 1;
goto repeat;
}
return err;
}
......@@ -304,19 +507,14 @@ __change_page_attr(unsigned long address, unsigned long pfn,
*
* Modules and drivers should use the set_memory_* APIs instead.
*/
#define HIGH_MAP_START __START_KERNEL_map
#define HIGH_MAP_END (__START_KERNEL_map + KERNEL_TEXT_SIZE)
static int
change_page_attr_addr(unsigned long address, pgprot_t mask_set,
pgprot_t mask_clr)
static int change_page_attr_addr(struct cpa_data *cpa)
{
unsigned long phys_addr = __pa(address);
unsigned long pfn = phys_addr >> PAGE_SHIFT;
int err;
unsigned long address = cpa->vaddr;
#ifdef CONFIG_X86_64
unsigned long phys_addr = __pa(address);
/*
* If we are inside the high mapped kernel range, then we
* fixup the low mapping first. __va() returns the virtual
......@@ -326,7 +524,7 @@ change_page_attr_addr(unsigned long address, pgprot_t mask_set,
address = (unsigned long) __va(phys_addr);
#endif
err = __change_page_attr(address, pfn, mask_set, mask_clr);
err = __change_page_attr(address, cpa);
if (err)
return err;
......@@ -339,42 +537,89 @@ change_page_attr_addr(unsigned long address, pgprot_t mask_set,
/*
* Calc the high mapping address. See __phys_addr()
* for the non obvious details.
*
* Note that NX and other required permissions are
* checked in static_protections().
*/
address = phys_addr + HIGH_MAP_START - phys_base;
/* Make sure the kernel mappings stay executable */
pgprot_val(mask_clr) |= _PAGE_NX;
/*
* Our high aliases are imprecise, because we check
* everything between 0 and KERNEL_TEXT_SIZE, so do
* not propagate lookup failures back to users:
*/
__change_page_attr(address, pfn, mask_set, mask_clr);
__change_page_attr(address, cpa);
}
#endif
return err;
}
static int __change_page_attr_set_clr(unsigned long addr, int numpages,
pgprot_t mask_set, pgprot_t mask_clr)
static int __change_page_attr_set_clr(struct cpa_data *cpa)
{
unsigned int i;
int ret;
int ret, numpages = cpa->numpages;
for (i = 0; i < numpages ; i++, addr += PAGE_SIZE) {
ret = change_page_attr_addr(addr, mask_set, mask_clr);
while (numpages) {
/*
* Store the remaining nr of pages for the large page
* preservation check.
*/
cpa->numpages = numpages;
ret = change_page_attr_addr(cpa);
if (ret)
return ret;
}
/*
* Adjust the number of pages with the result of the
* CPA operation. Either a large page has been
* preserved or a single page update happened.
*/
BUG_ON(cpa->numpages > numpages);
numpages -= cpa->numpages;
cpa->vaddr += cpa->numpages * PAGE_SIZE;
}
return 0;
}
static inline int cache_attr(pgprot_t attr)
{
return pgprot_val(attr) &
(_PAGE_PAT | _PAGE_PAT_LARGE | _PAGE_PWT | _PAGE_PCD);
}
static int change_page_attr_set_clr(unsigned long addr, int numpages,
pgprot_t mask_set, pgprot_t mask_clr)
{
int ret = __change_page_attr_set_clr(addr, numpages, mask_set,
mask_clr);
struct cpa_data cpa;
int ret, cache;
/*
* Check, if we are requested to change a not supported
* feature:
*/
mask_set = canon_pgprot(mask_set);
mask_clr = canon_pgprot(mask_clr);
if (!pgprot_val(mask_set) && !pgprot_val(mask_clr))
return 0;
cpa.vaddr = addr;
cpa.numpages = numpages;
cpa.mask_set = mask_set;
cpa.mask_clr = mask_clr;
cpa.flushtlb = 0;
ret = __change_page_attr_set_clr(&cpa);
/*
* Check whether we really changed something:
*/
if (!cpa.flushtlb)
return ret;
/*
* No need to flush, when we did not set any of the caching
* attributes:
*/
cache = cache_attr(mask_set);
/*
* On success we use clflush, when the CPU supports it to
......@@ -383,9 +628,9 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
* wbindv):
*/
if (!ret && cpu_has_clflush)
cpa_flush_range(addr, numpages);
cpa_flush_range(addr, numpages, cache);
else
cpa_flush_all();
cpa_flush_all(cache);
return ret;
}
......@@ -489,37 +734,26 @@ int set_pages_rw(struct page *page, int numpages)
return set_memory_rw(addr, numpages);
}
#if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_CPA_DEBUG)
static inline int __change_page_attr_set(unsigned long addr, int numpages,
pgprot_t mask)
{
return __change_page_attr_set_clr(addr, numpages, mask, __pgprot(0));
}
static inline int __change_page_attr_clear(unsigned long addr, int numpages,
pgprot_t mask)
{
return __change_page_attr_set_clr(addr, numpages, __pgprot(0), mask);
}
#endif
#ifdef CONFIG_DEBUG_PAGEALLOC
static int __set_pages_p(struct page *page, int numpages)
{
unsigned long addr = (unsigned long)page_address(page);
struct cpa_data cpa = { .vaddr = (unsigned long) page_address(page),
.numpages = numpages,
.mask_set = __pgprot(_PAGE_PRESENT | _PAGE_RW),
.mask_clr = __pgprot(0)};
return __change_page_attr_set(addr, numpages,
__pgprot(_PAGE_PRESENT | _PAGE_RW));
return __change_page_attr_set_clr(&cpa);
}
static int __set_pages_np(struct page *page, int numpages)
{
unsigned long addr = (unsigned long)page_address(page);
struct cpa_data cpa = { .vaddr = (unsigned long) page_address(page),
.numpages = numpages,
.mask_set = __pgprot(0),
.mask_clr = __pgprot(_PAGE_PRESENT | _PAGE_RW)};
return __change_page_attr_clear(addr, numpages,
__pgprot(_PAGE_PRESENT));
return __change_page_attr_set_clr(&cpa);
}
void kernel_map_pages(struct page *page, int numpages, int enable)
......
arch/x86/mm/pgtable_32.c
浏览文件 @ d2fc0bac
......@@ -219,50 +219,39 @@ static inline void pgd_list_del(pgd_t *pgd)
list_del(&page->lru);
}
#define UNSHARED_PTRS_PER_PGD \
(SHARED_KERNEL_PMD ? USER_PTRS_PER_PGD : PTRS_PER_PGD)
#if (PTRS_PER_PMD == 1)
/* Non-PAE pgd constructor */
static void pgd_ctor(void *pgd)
static void pgd_ctor(void *p)
{
pgd_t *pgd = p;
unsigned long flags;
/* !PAE, no pagetable sharing */
/* Clear usermode parts of PGD */
memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
spin_lock_irqsave(&pgd_lock, flags);
/* must happen under lock */
clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
swapper_pg_dir + USER_PTRS_PER_PGD,
KERNEL_PGD_PTRS);
paravirt_alloc_pd_clone(__pa(pgd) >> PAGE_SHIFT,
__pa(swapper_pg_dir) >> PAGE_SHIFT,
USER_PTRS_PER_PGD,
KERNEL_PGD_PTRS);
pgd_list_add(pgd);
spin_unlock_irqrestore(&pgd_lock, flags);
}
#else /* PTRS_PER_PMD > 1 */
/* PAE pgd constructor */
static void pgd_ctor(void *pgd)
{
/* PAE, kernel PMD may be shared */
if (SHARED_KERNEL_PMD) {
clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
/* If the pgd points to a shared pagetable level (either the
ptes in non-PAE, or shared PMD in PAE), then just copy the
references from swapper_pg_dir. */
if (PAGETABLE_LEVELS == 2 ||
(PAGETABLE_LEVELS == 3 && SHARED_KERNEL_PMD)) {
clone_pgd_range(pgd + USER_PTRS_PER_PGD,
swapper_pg_dir + USER_PTRS_PER_PGD,
KERNEL_PGD_PTRS);
} else {
unsigned long flags;
paravirt_alloc_pd_clone(__pa(pgd) >> PAGE_SHIFT,
__pa(swapper_pg_dir) >> PAGE_SHIFT,
USER_PTRS_PER_PGD,
KERNEL_PGD_PTRS);
}
memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
spin_lock_irqsave(&pgd_lock, flags);
/* list required to sync kernel mapping updates */
if (!SHARED_KERNEL_PMD)
pgd_list_add(pgd);
spin_unlock_irqrestore(&pgd_lock, flags);
}
spin_unlock_irqrestore(&pgd_lock, flags);
}
#endif /* PTRS_PER_PMD */
static void pgd_dtor(void *pgd)
{
......@@ -276,9 +265,6 @@ static void pgd_dtor(void *pgd)
spin_unlock_irqrestore(&pgd_lock, flags);
}
#define UNSHARED_PTRS_PER_PGD \
(SHARED_KERNEL_PMD ? USER_PTRS_PER_PGD : PTRS_PER_PGD)
#ifdef CONFIG_X86_PAE
/*
* Mop up any pmd pages which may still be attached to the pgd.
......@@ -387,13 +373,6 @@ void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
{
/* This is called just after the pmd has been detached from
the pgd, which requires a full tlb flush to be recognized
by the CPU. Rather than incurring multiple tlb flushes
while the address space is being pulled down, make the tlb
gathering machinery do a full flush when we're done. */
tlb->fullmm = 1;
paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
tlb_remove_page(tlb, virt_to_page(pmd));
}
......
arch/x86/pci/numa.c
浏览文件 @ d2fc0bac
......@@ -5,36 +5,62 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/nodemask.h>
#include <mach_apic.h>
#include "pci.h"
#define XQUAD_PORTIO_BASE 0xfe400000
#define XQUAD_PORTIO_QUAD 0x40000 /* 256k per quad. */
#define BUS2QUAD(global) (mp_bus_id_to_node[global])
#define BUS2LOCAL(global) (mp_bus_id_to_local[global])
#define QUADLOCAL2BUS(quad,local) (quad_local_to_mp_bus_id[quad][local])
extern void *xquad_portio; /* Where the IO area was mapped */
#define XQUAD_PORT_ADDR(port, quad) (xquad_portio + (XQUAD_PORTIO_QUAD*quad) + port)
#define PCI_CONF1_MQ_ADDRESS(bus, devfn, reg) \
(0x80000000 | (BUS2LOCAL(bus) << 16) | (devfn << 8) | (reg & ~3))
static void write_cf8(unsigned bus, unsigned devfn, unsigned reg)
{
unsigned val = PCI_CONF1_MQ_ADDRESS(bus, devfn, reg);
if (xquad_portio)
writel(val, XQUAD_PORT_ADDR(0xcf8, BUS2QUAD(bus)));
else
outl(val, 0xCF8);
}
static int pci_conf1_mq_read(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 *value)
{
unsigned long flags;
void *adr __iomem = XQUAD_PORT_ADDR(0xcfc, BUS2QUAD(bus));
if (!value || (bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
return -EINVAL;
spin_lock_irqsave(&pci_config_lock, flags);
outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
write_cf8(bus, devfn, reg);
switch (len) {
case 1:
*value = inb_quad(0xCFC + (reg & 3), BUS2QUAD(bus));
if (xquad_portio)
*value = readb(adr + (reg & 3));
else
*value = inb(0xCFC + (reg & 3));
break;
case 2:
*value = inw_quad(0xCFC + (reg & 2), BUS2QUAD(bus));
if (xquad_portio)
*value = readw(adr + (reg & 2));
else
*value = inw(0xCFC + (reg & 2));
break;
case 4:
*value = inl_quad(0xCFC, BUS2QUAD(bus));
if (xquad_portio)
*value = readl(adr);
else
*value = inl(0xCFC);
break;
}
......@@ -47,23 +73,33 @@ static int pci_conf1_mq_write(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 value)
{
unsigned long flags;
void *adr __iomem = XQUAD_PORT_ADDR(0xcfc, BUS2QUAD(bus));
if ((bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
return -EINVAL;
spin_lock_irqsave(&pci_config_lock, flags);
outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
write_cf8(bus, devfn, reg);
switch (len) {
case 1:
outb_quad((u8)value, 0xCFC + (reg & 3), BUS2QUAD(bus));
if (xquad_portio)
writeb(value, adr + (reg & 3));
else
outb((u8)value, 0xCFC + (reg & 3));
break;
case 2:
outw_quad((u16)value, 0xCFC + (reg & 2), BUS2QUAD(bus));
if (xquad_portio)
writew(value, adr + (reg & 2));
else
outw((u16)value, 0xCFC + (reg & 2));
break;
case 4:
outl_quad((u32)value, 0xCFC, BUS2QUAD(bus));
if (xquad_portio)
writel(value, adr + reg);
else
outl((u32)value, 0xCFC);
break;
}
......
include/asm-generic/rtc.h
浏览文件 @ d2fc0bac
......@@ -35,10 +35,11 @@
static inline unsigned char rtc_is_updating(void)
{
unsigned char uip;
unsigned long flags;
spin_lock_irq(&rtc_lock);
spin_lock_irqsave(&rtc_lock, flags);
uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
spin_unlock_irq(&rtc_lock);
spin_unlock_irqrestore(&rtc_lock, flags);
return uip;
}
......@@ -46,6 +47,8 @@ static inline unsigned int get_rtc_time(struct rtc_time *time)
{
unsigned long uip_watchdog = jiffies;
unsigned char ctrl;
unsigned long flags;
#ifdef CONFIG_MACH_DECSTATION
unsigned int real_year;
#endif
......@@ -72,7 +75,7 @@ static inline unsigned int get_rtc_time(struct rtc_time *time)
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
* by the RTC when initially set to a non-zero value.
*/
spin_lock_irq(&rtc_lock);
spin_lock_irqsave(&rtc_lock, flags);
time->tm_sec = CMOS_READ(RTC_SECONDS);
time->tm_min = CMOS_READ(RTC_MINUTES);
time->tm_hour = CMOS_READ(RTC_HOURS);
......@@ -83,7 +86,7 @@ static inline unsigned int get_rtc_time(struct rtc_time *time)
real_year = CMOS_READ(RTC_DEC_YEAR);
#endif
ctrl = CMOS_READ(RTC_CONTROL);
spin_unlock_irq(&rtc_lock);
spin_unlock_irqrestore(&rtc_lock, flags);
if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
{
......
include/asm-generic/tlb.h
浏览文件 @ d2fc0bac
......@@ -14,7 +14,6 @@
#define _ASM_GENERIC__TLB_H
#include <linux/swap.h>
#include <linux/quicklist.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
......
include/asm-x86/asm.h
浏览文件 @ d2fc0bac
......@@ -29,4 +29,11 @@
#endif /* CONFIG_X86_32 */
/* Exception table entry */
# define _ASM_EXTABLE(from,to) \
" .section __ex_table,\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR #from "," #to "\n" \
" .previous\n"
#endif /* _ASM_X86_ASM_H */
include/asm-x86/bugs.h
浏览文件 @ d2fc0bac
......@@ -2,6 +2,6 @@
#define _ASM_X86_BUGS_H
extern void check_bugs(void);
extern int ppro_with_ram_bug(void);
int ppro_with_ram_bug(void);
#endif /* _ASM_X86_BUGS_H */
include/asm-x86/cpufeature.h
浏览文件 @ d2fc0bac
......@@ -4,9 +4,6 @@
#ifndef _ASM_X86_CPUFEATURE_H
#define _ASM_X86_CPUFEATURE_H
#ifndef __ASSEMBLY__
#include <linux/bitops.h>
#endif
#include <asm/required-features.h>
#define NCAPINTS 8 /* N 32-bit words worth of info */
......@@ -49,6 +46,7 @@
#define X86_FEATURE_MP (1*32+19) /* MP Capable. */
#define X86_FEATURE_NX (1*32+20) /* Execute Disable */
#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
#define X86_FEATURE_GBPAGES (1*32+26) /* GB pages */
#define X86_FEATURE_RDTSCP (1*32+27) /* RDTSCP */
#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
......@@ -115,6 +113,13 @@
*/
#define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#include <linux/bitops.h>
extern const char * const x86_cap_flags[NCAPINTS*32];
extern const char * const x86_power_flags[32];
#define cpu_has(c, bit) \
(__builtin_constant_p(bit) && \
( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \
......@@ -175,6 +180,7 @@
#define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
#define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS)
#define cpu_has_gbpages boot_cpu_has(X86_FEATURE_GBPAGES)
#if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64)
# define cpu_has_invlpg 1
......@@ -204,4 +210,6 @@
#endif /* CONFIG_X86_64 */
#endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
#endif /* _ASM_X86_CPUFEATURE_H */
include/asm-x86/efi.h
浏览文件 @ d2fc0bac
......@@ -33,7 +33,7 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
efi_call_virt(f, a1, a2, a3, a4, a5, a6)
#define efi_ioremap(addr, size) ioremap(addr, size)
#define efi_ioremap(addr, size) ioremap_cache(addr, size)
#else /* !CONFIG_X86_32 */
......@@ -86,7 +86,7 @@ extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
(u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
extern void *efi_ioremap(unsigned long offset, unsigned long size);
extern void *efi_ioremap(unsigned long addr, unsigned long size);
#endif /* CONFIG_X86_32 */
......
include/asm-x86/futex.h
浏览文件 @ d2fc0bac
......@@ -17,11 +17,8 @@
"2: .section .fixup,\"ax\"\n \
3: mov %3, %1\n \
jmp 2b\n \
.previous\n \
.section __ex_table,\"a\"\n \
.align 8\n" \
_ASM_PTR "1b,3b\n \
.previous" \
.previous\n" \
_ASM_EXTABLE(1b,3b) \
: "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
: "i" (-EFAULT), "0" (oparg), "1" (0))
......@@ -35,11 +32,9 @@
3: .section .fixup,\"ax\"\n \
4: mov %5, %1\n \
jmp 3b\n \
.previous\n \
.section __ex_table,\"a\"\n \
.align 8\n" \
_ASM_PTR "1b,4b,2b,4b\n \
.previous" \
.previous\n" \
_ASM_EXTABLE(1b,4b) \
_ASM_EXTABLE(2b,4b) \
: "=&a" (oldval), "=&r" (ret), "+m" (*uaddr), \
"=&r" (tem) \
: "r" (oparg), "i" (-EFAULT), "1" (0))
......@@ -111,18 +106,12 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
return -EFAULT;
__asm__ __volatile__(
"1: lock; cmpxchgl %3, %1 \n"
"2: .section .fixup, \"ax\" \n"
"3: mov %2, %0 \n"
" jmp 2b \n"
" .previous \n"
" .section __ex_table, \"a\" \n"
" .align 8 \n"
_ASM_PTR " 1b,3b \n"
" .previous \n"
_ASM_EXTABLE(1b,3b)
: "=a" (oldval), "+m" (*uaddr)
: "i" (-EFAULT), "r" (newval), "0" (oldval)
: "memory"
......
include/asm-x86/highmem.h
浏览文件 @ d2fc0bac
......@@ -63,8 +63,8 @@ extern pte_t *pkmap_page_table;
#define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT)
#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
extern void * FASTCALL(kmap_high(struct page *page));
extern void FASTCALL(kunmap_high(struct page *page));
extern void *kmap_high(struct page *page);
extern void kunmap_high(struct page *page);
void *kmap(struct page *page);
void kunmap(struct page *page);
......
include/asm-x86/hw_irq_32.h
浏览文件 @ d2fc0bac
......@@ -47,7 +47,7 @@ void enable_8259A_irq(unsigned int irq);
int i8259A_irq_pending(unsigned int irq);
void make_8259A_irq(unsigned int irq);
void init_8259A(int aeoi);
void FASTCALL(send_IPI_self(int vector));
void send_IPI_self(int vector);
void init_VISWS_APIC_irqs(void);
void setup_IO_APIC(void);
void disable_IO_APIC(void);
......
include/asm-x86/i387.h
浏览文件 @ d2fc0bac
......@@ -13,6 +13,7 @@
#include <linux/sched.h>
#include <linux/kernel_stat.h>
#include <linux/regset.h>
#include <asm/asm.h>
#include <asm/processor.h>
#include <asm/sigcontext.h>
#include <asm/user.h>
......@@ -41,10 +42,7 @@ static inline void tolerant_fwait(void)
{
asm volatile("1: fwait\n"
"2:\n"
" .section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 1b,2b\n"
" .previous\n");
_ASM_EXTABLE(1b,2b));
}
static inline int restore_fpu_checking(struct i387_fxsave_struct *fx)
......@@ -57,10 +55,7 @@ static inline int restore_fpu_checking(struct i387_fxsave_struct *fx)
"3: movl $-1,%[err]\n"
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 1b,3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: [err] "=r" (err)
#if 0 /* See comment in __save_init_fpu() below. */
: [fx] "r" (fx), "m" (*fx), "0" (0));
......@@ -99,10 +94,7 @@ static inline int save_i387_checking(struct i387_fxsave_struct __user *fx)
"3: movl $-1,%[err]\n"
" jmp 2b\n"
".previous\n"
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 1b,3b\n"
".previous"
_ASM_EXTABLE(1b,3b)
: [err] "=r" (err), "=m" (*fx)
#if 0 /* See comment in __fxsave_clear() below. */
: [fx] "r" (fx), "0" (0));
......
include/asm-x86/io_32.h
浏览文件 @ d2fc0bac
......@@ -275,29 +275,6 @@ static inline void slow_down_io(void) {
#endif
#ifdef CONFIG_X86_NUMAQ
extern void *xquad_portio; /* Where the IO area was mapped */
#define XQUAD_PORT_ADDR(port, quad) (xquad_portio + (XQUAD_PORTIO_QUAD*quad) + port)
#define __BUILDIO(bwl,bw,type) \
static inline void out##bwl##_quad(unsigned type value, int port, int quad) { \
if (xquad_portio) \
write##bwl(value, XQUAD_PORT_ADDR(port, quad)); \
else \
out##bwl##_local(value, port); \
} \
static inline void out##bwl(unsigned type value, int port) { \
out##bwl##_quad(value, port, 0); \
} \
static inline unsigned type in##bwl##_quad(int port, int quad) { \
if (xquad_portio) \
return read##bwl(XQUAD_PORT_ADDR(port, quad)); \
else \
return in##bwl##_local(port); \
} \
static inline unsigned type in##bwl(int port) { \
return in##bwl##_quad(port, 0); \
}
#else
#define __BUILDIO(bwl,bw,type) \
static inline void out##bwl(unsigned type value, int port) { \
out##bwl##_local(value, port); \
......@@ -305,8 +282,6 @@ static inline void out##bwl(unsigned type value, int port) { \
static inline unsigned type in##bwl(int port) { \
return in##bwl##_local(port); \
}
#endif
#define BUILDIO(bwl,bw,type) \
static inline void out##bwl##_local(unsigned type value, int port) { \
......
include/asm-x86/mach-numaq/mach_apic.h
浏览文件 @ d2fc0bac
......@@ -109,6 +109,8 @@ static inline int mpc_apic_id(struct mpc_config_processor *m,
return logical_apicid;
}
extern void *xquad_portio;
static inline void setup_portio_remap(void)
{
int num_quads = num_online_nodes();
......
include/asm-x86/msr.h
浏览文件 @ d2fc0bac
......@@ -57,10 +57,7 @@ static inline unsigned long long native_read_msr_safe(unsigned int msr,
".section .fixup,\"ax\"\n\t"
"3: mov %3,%0 ; jmp 1b\n\t"
".previous\n\t"
".section __ex_table,\"a\"\n"
_ASM_ALIGN "\n\t"
_ASM_PTR " 2b,3b\n\t"
".previous"
_ASM_EXTABLE(2b,3b)
: "=r" (*err), EAX_EDX_RET(val, low, high)
: "c" (msr), "i" (-EFAULT));
return EAX_EDX_VAL(val, low, high);
......@@ -81,10 +78,7 @@ static inline int native_write_msr_safe(unsigned int msr,
".section .fixup,\"ax\"\n\t"
"3: mov %4,%0 ; jmp 1b\n\t"
".previous\n\t"
".section __ex_table,\"a\"\n"
_ASM_ALIGN "\n\t"
_ASM_PTR " 2b,3b\n\t"
".previous"
_ASM_EXTABLE(2b,3b)
: "=a" (err)
: "c" (msr), "0" (low), "d" (high),
"i" (-EFAULT));
......
include/asm-x86/page.h
浏览文件 @ d2fc0bac
......@@ -13,8 +13,8 @@
#define PHYSICAL_PAGE_MASK (PAGE_MASK & __PHYSICAL_MASK)
#define PTE_MASK (_AT(long, PHYSICAL_PAGE_MASK))
#define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT)
#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
#define HPAGE_SHIFT PMD_SHIFT
#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
......
include/asm-x86/page_64.h
浏览文件 @ d2fc0bac
......@@ -23,6 +23,9 @@
#define MCE_STACK 5
#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
#define __PHYSICAL_START CONFIG_PHYSICAL_START
......
include/asm-x86/pgalloc_32.h
浏览文件 @ d2fc0bac
......@@ -80,8 +80,10 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
set_pud(pudp, __pud(__pa(pmd) | _PAGE_PRESENT));
/*
* Pentium-II erratum A13: in PAE mode we explicitly have to flush
* the TLB via cr3 if the top-level pgd is changed...
* According to Intel App note "TLBs, Paging-Structure Caches,
* and Their Invalidation", April 2007, document 317080-001,
* section 8.1: in PAE mode we explicitly have to flush the
* TLB via cr3 if the top-level pgd is changed...
*/
if (mm == current->active_mm)
write_cr3(read_cr3());
......
include/asm-x86/pgtable-3level.h
浏览文件 @ d2fc0bac
......@@ -93,26 +93,22 @@ static inline void native_pmd_clear(pmd_t *pmd)
static inline void pud_clear(pud_t *pudp)
{
unsigned long pgd;
set_pud(pudp, __pud(0));
/*
* In principle we need to do a cr3 reload here to make sure
* the processor recognizes the changed pgd. In practice, all
* the places where pud_clear() gets called are followed by
* full tlb flushes anyway, so we can defer the cost here.
*
* Specifically:
*
* mm/memory.c:free_pmd_range() - immediately after the
* pud_clear() it does a pmd_free_tlb(). We change the
* mmu_gather structure to do a full tlb flush (which has the
* effect of reloading cr3) when the pagetable free is
* complete.
* According to Intel App note "TLBs, Paging-Structure Caches,
* and Their Invalidation", April 2007, document 317080-001,
* section 8.1: in PAE mode we explicitly have to flush the
* TLB via cr3 if the top-level pgd is changed...
*
* arch/x86/mm/hugetlbpage.c:huge_pmd_unshare() - the call to
* this is followed by a flush_tlb_range, which on x86 does a
* full tlb flush.
* Make sure the pud entry we're updating is within the
* current pgd to avoid unnecessary TLB flushes.
*/
pgd = read_cr3();
if (__pa(pudp) >= pgd && __pa(pudp) < (pgd + sizeof(pgd_t)*PTRS_PER_PGD))
write_cr3(pgd);
}
#define pud_page(pud) \
......
include/asm-x86/pgtable.h
浏览文件 @ d2fc0bac
......@@ -13,10 +13,12 @@
#define _PAGE_BIT_DIRTY 6
#define _PAGE_BIT_FILE 6
#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
#define _PAGE_BIT_PAT 7 /* on 4KB pages */
#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
#define _PAGE_BIT_UNUSED2 10
#define _PAGE_BIT_UNUSED3 11
#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
/*
......@@ -36,6 +38,8 @@
#define _PAGE_UNUSED1 (_AC(1, L)<<_PAGE_BIT_UNUSED1)
#define _PAGE_UNUSED2 (_AC(1, L)<<_PAGE_BIT_UNUSED2)
#define _PAGE_UNUSED3 (_AC(1, L)<<_PAGE_BIT_UNUSED3)
#define _PAGE_PAT (_AC(1, L)<<_PAGE_BIT_PAT)
#define _PAGE_PAT_LARGE (_AC(1, L)<<_PAGE_BIT_PAT_LARGE)
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
#define _PAGE_NX (_AC(1, ULL) << _PAGE_BIT_NX)
......
include/asm-x86/pgtable_32.h
浏览文件 @ d2fc0bac
......@@ -148,6 +148,8 @@ static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
static inline int pud_large(pud_t pud) { return 0; }
/*
* the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
*
......
include/asm-x86/pgtable_64.h
浏览文件 @ d2fc0bac
......@@ -21,7 +21,6 @@ extern pgd_t init_level4_pgt[];
#define swapper_pg_dir init_level4_pgt
extern void paging_init(void);
extern void clear_kernel_mapping(unsigned long addr, unsigned long size);
#endif /* !__ASSEMBLY__ */
......@@ -199,6 +198,12 @@ static inline unsigned long pmd_bad(pmd_t pmd)
#define pud_offset(pgd, address) ((pud_t *) pgd_page_vaddr(*(pgd)) + pud_index(address))
#define pud_present(pud) (pud_val(pud) & _PAGE_PRESENT)
static inline int pud_large(pud_t pte)
{
return (pud_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
(_PAGE_PSE|_PAGE_PRESENT);
}
/* PMD - Level 2 access */
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PTE_MASK))
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
......
include/asm-x86/string_32.h
浏览文件 @ d2fc0bac
......@@ -213,14 +213,14 @@ static __always_inline void * __constant_c_and_count_memset(void * s, unsigned l
case 0:
return s;
case 1:
*(unsigned char *)s = pattern;
*(unsigned char *)s = pattern & 0xff;
return s;
case 2:
*(unsigned short *)s = pattern;
*(unsigned short *)s = pattern & 0xffff;
return s;
case 3:
*(unsigned short *)s = pattern;
*(2+(unsigned char *)s) = pattern;
*(unsigned short *)s = pattern & 0xffff;
*(2+(unsigned char *)s) = pattern & 0xff;
return s;
case 4:
*(unsigned long *)s = pattern;
......
include/asm-x86/system.h
浏览文件 @ d2fc0bac
......@@ -20,8 +20,8 @@
#ifdef CONFIG_X86_32
struct task_struct; /* one of the stranger aspects of C forward declarations */
extern struct task_struct *FASTCALL(__switch_to(struct task_struct *prev,
struct task_struct *next));
struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
/*
* Saving eflags is important. It switches not only IOPL between tasks,
......@@ -130,10 +130,7 @@ extern void load_gs_index(unsigned);
"movl %k1, %%" #seg "\n\t" \
"jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n\t" \
_ASM_ALIGN "\n\t" \
_ASM_PTR " 1b,3b\n" \
".previous" \
_ASM_EXTABLE(1b,3b) \
: :"r" (value), "r" (0))
......@@ -214,12 +211,10 @@ static inline unsigned long native_read_cr4_safe(void)
/* This could fault if %cr4 does not exist. In x86_64, a cr4 always
* exists, so it will never fail. */
#ifdef CONFIG_X86_32
asm volatile("1: mov %%cr4, %0 \n"
"2: \n"
".section __ex_table,\"a\" \n"
".long 1b,2b \n"
".previous \n"
: "=r" (val), "=m" (__force_order) : "0" (0));
asm volatile("1: mov %%cr4, %0\n"
"2:\n"
_ASM_EXTABLE(1b,2b)
: "=r" (val), "=m" (__force_order) : "0" (0));
#else
val = native_read_cr4();
#endif
......@@ -276,9 +271,9 @@ static inline void native_wbinvd(void)
#endif /* __KERNEL__ */
static inline void clflush(void *__p)
static inline void clflush(volatile void *__p)
{
asm volatile("clflush %0" : "+m" (*(char __force *)__p));
asm volatile("clflush %0" : "+m" (*(volatile char __force *)__p));
}
#define nop() __asm__ __volatile__ ("nop")
......
include/asm-x86/uaccess_32.h
浏览文件 @ d2fc0bac
......@@ -8,6 +8,7 @@
#include <linux/thread_info.h>
#include <linux/prefetch.h>
#include <linux/string.h>
#include <asm/asm.h>
#include <asm/page.h>
#define VERIFY_READ 0
......@@ -287,11 +288,8 @@ extern void __put_user_8(void);
"4: movl %3,%0\n" \
" jmp 3b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 1b,4b\n" \
" .long 2b,4b\n" \
".previous" \
_ASM_EXTABLE(1b,4b) \
_ASM_EXTABLE(2b,4b) \
: "=r"(err) \
: "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))
......@@ -338,10 +336,7 @@ struct __large_struct { unsigned long buf[100]; };
"3: movl %3,%0\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 1b,3b\n" \
".previous" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err) \
: ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))
......@@ -378,10 +373,7 @@ do { \
" xor"itype" %"rtype"1,%"rtype"1\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 1b,3b\n" \
".previous" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err), ltype (x) \
: "m"(__m(addr)), "i"(errret), "0"(err))
......
include/asm-x86/uaccess_64.h
浏览文件 @ d2fc0bac
......@@ -181,10 +181,7 @@ struct __large_struct { unsigned long buf[100]; };
"3: mov %3,%0\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 8\n" \
" .quad 1b,3b\n" \
".previous" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err) \
: ltype (x), "m"(__m(addr)), "i"(errno), "0"(err))
......@@ -226,10 +223,7 @@ do { \
" xor"itype" %"rtype"1,%"rtype"1\n" \
" jmp 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 8\n" \
" .quad 1b,3b\n" \
".previous" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err), ltype (x) \
: "m"(__m(addr)), "i"(errno), "0"(err))
......
include/asm-x86/vm86.h
浏览文件 @ d2fc0bac
......@@ -195,6 +195,7 @@ struct kernel_vm86_struct {
void handle_vm86_fault(struct kernel_vm86_regs *, long);
int handle_vm86_trap(struct kernel_vm86_regs *, long, int);
struct pt_regs *save_v86_state(struct kernel_vm86_regs *);
struct task_struct;
void release_vm86_irqs(struct task_struct *);
......
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